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Herne" To: qemu-devel@nongnu.org, qemu-s390x@nongnu.org, cohuck@redhat.com, pasic@linux.ibm.com, bjsdjshi@linux.ibm.com, borntraeger@de.ibm.com Date: Thu, 5 Jul 2018 13:25:33 -0400 X-Mailer: git-send-email 2.7.4 In-Reply-To: <1530811543-6881-1-git-send-email-jjherne@linux.ibm.com> References: <1530811543-6881-1-git-send-email-jjherne@linux.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 18070517-0072-0000-0000-0000037A8A87 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00009314; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000266; SDB=6.01056994; UDB=6.00542264; IPR=6.00834914; MB=3.00022012; MTD=3.00000008; XFM=3.00000015; UTC=2018-07-05 17:25:52 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18070517-0073-0000-0000-0000489A78A7 Message-Id: <1530811543-6881-6-git-send-email-jjherne@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2018-07-05_06:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=965 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1806210000 definitions=main-1807050196 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.156.1 X-Mailman-Approved-At: Thu, 05 Jul 2018 14:03:14 -0400 Subject: [Qemu-devel] [RFC 05/15] s390-bios: Factor finding boot device out of virtio code path X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: "Jason J. Herne" Make a new routine find_boot_device to locate the boot device for all cases. not just virtio. In one case no boot device is specified and a suitable boot device can not be auto detected. The error message for this case was specific to virtio devices. We update this message to remove virtio specific wording. Signed-off-by: Jason J. Herne Signed-off-by: Jason J. Herne --- pc-bios/s390-ccw/main.c | 87 +++++++++++++++++++++++++++------------------= ---- 1 file changed, 48 insertions(+), 39 deletions(-) diff --git a/pc-bios/s390-ccw/main.c b/pc-bios/s390-ccw/main.c index 30f847f..25e6124 100644 --- a/pc-bios/s390-ccw/main.c +++ b/pc-bios/s390-ccw/main.c @@ -55,17 +55,18 @@ unsigned int get_loadparm_index(void) * NOTE: The global variable blk_schid is updated to contain the subchannel * information. */ -static bool find_dev(Schib *schib, int dev_no) +static bool find_subch(int dev_no) { + Schib schib; int i, r; =20 for (i =3D 0; i < 0x10000; i++) { blk_schid.sch_no =3D i; - r =3D stsch_err(blk_schid, schib); + r =3D stsch_err(blk_schid, &schib); if ((r =3D=3D 3) || (r =3D=3D -EIO)) { break; } - if (!schib->pmcw.dnv) { + if (!schib.pmcw.dnv) { continue; } =20 @@ -77,7 +78,7 @@ static bool find_dev(Schib *schib, int dev_no) continue; } =20 - if ((dev_no < 0) || (schib->pmcw.dev =3D=3D dev_no)) { + if ((dev_no < 0) || (schib.pmcw.dev =3D=3D dev_no)) { return true; } } @@ -133,56 +134,63 @@ static void boot_setup(void) have_iplb =3D store_iplb(&iplb); } =20 -static void virtio_setup(void) +static void find_boot_device(void) { - Schib schib; - int ssid; - bool found =3D false; - uint16_t dev_no; VDev *vdev =3D virtio_get_device(); - QemuIplParameters *early_qipl =3D (QemuIplParameters *)QIPL_ADDRESS; - - memcpy(&qipl, early_qipl, sizeof(QemuIplParameters)); + int ssid; + bool found; =20 - if (have_iplb) { - switch (iplb.pbt) { - case S390_IPL_TYPE_CCW: - dev_no =3D iplb.ccw.devno; - debug_print_int("device no. ", dev_no); - blk_schid.ssid =3D iplb.ccw.ssid & 0x3; - debug_print_int("ssid ", blk_schid.ssid); - found =3D find_dev(&schib, dev_no); - break; - case S390_IPL_TYPE_QEMU_SCSI: - vdev->scsi_device_selected =3D true; - vdev->selected_scsi_device.channel =3D iplb.scsi.channel; - vdev->selected_scsi_device.target =3D iplb.scsi.target; - vdev->selected_scsi_device.lun =3D iplb.scsi.lun; - blk_schid.ssid =3D iplb.scsi.ssid & 0x3; - found =3D find_dev(&schib, iplb.scsi.devno); - break; - default: - panic("List-directed IPL not supported yet!\n"); - } - menu_setup(); - } else { + if (!have_iplb) { for (ssid =3D 0; ssid < 0x3; ssid++) { blk_schid.ssid =3D ssid; - found =3D find_dev(&schib, -1); + found =3D find_subch(-1); if (found) { - break; + return; } } + panic("Could not find a suitable boot device (none specified)\n"); } =20 - IPL_assert(found, "No virtio device found"); + switch (iplb.pbt) { + case S390_IPL_TYPE_CCW: + debug_print_int("device no. ", iplb.ccw.devno); + blk_schid.ssid =3D iplb.ccw.ssid & 0x3; + debug_print_int("ssid ", blk_schid.ssid); + found =3D find_subch(iplb.ccw.devno); + break; + case S390_IPL_TYPE_QEMU_SCSI: + vdev->scsi_device_selected =3D true; + vdev->selected_scsi_device.channel =3D iplb.scsi.channel; + vdev->selected_scsi_device.target =3D iplb.scsi.target; + vdev->selected_scsi_device.lun =3D iplb.scsi.lun; + blk_schid.ssid =3D iplb.scsi.ssid & 0x3; + found =3D find_subch(iplb.scsi.devno); + break; + default: + panic("List-directed IPL not supported yet!\n"); + } + + if (!found) { + IPL_assert(found, "Boot device not found\n"); + } +} + +static void virtio_setup(void) +{ + VDev *vdev =3D virtio_get_device(); + QemuIplParameters *early_qipl =3D (QemuIplParameters *)QIPL_ADDRESS; + + memcpy(&qipl, early_qipl, sizeof(QemuIplParameters)); + + if (have_iplb) { + menu_setup(); + } =20 if (virtio_get_device_type() =3D=3D VIRTIO_ID_NET) { sclp_print("Network boot device detected\n"); vdev->netboot_start_addr =3D qipl.netboot_start_addr; } else { virtio_blk_setup_device(blk_schid); - IPL_assert(virtio_ipl_disk_is_valid(), "No valid IPL device detect= ed"); } } @@ -192,8 +200,9 @@ int main(void) sclp_setup(); cio_setup(); boot_setup(); - virtio_setup(); + find_boot_device(); =20 + virtio_setup(); zipl_load(); /* no return */ =20 panic("Failed to load OS from hard disk\n"); --=20 2.7.4